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Finding the Fourth Proportional to 624,690.12, 862,072.92 and 338,210.40

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Solution

The fourth proportional to 624,690.12, 862,072.92 and 338,210.40 is: 466,730.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,690.12 : 862,072.92 = 338,210.40 : x
  2. Step 2: Convert to fraction form
    624,690.12/862,072.92 = 338,210.40/x
  3. Step 3: Cross multiply
    624,690.12x = 862,072.92 × 338,210.40
  4. Step 4: Simplify right side
    624,690.12x = 291,562,027,102.37
  5. Step 5: Solve for x
    x = 291,562,027,102.37/624,690.12
  6. Step 6: Final answer
    x = 466,730.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.